Sheave block



AQOS.

' Patented Aug. L 1922.

W/TNESSES A TTORNEYS D'UFF G. MANS-ES, 0F M RYVILLE, TENNESSEE, ASSIGNOR TG D. MANS-ES tb COMPANY, 0F VOSE, TENNESSEE, A CORPORATON 0F TENNESSEE.

SHEAVE BLOCK.

Specification oipLetters ?atent.

Patenten neg. 1,1922,

Application led December 27, 1920. Serial No. 433,39l.

.To ZZ whom it may coa/567%:

Be it known that l, DUFF G. MA'NGns, a citizen of the United States., and a resident of Maryville, in the county of Blount and State of Tennessee, have invented certain new and useful Improvements in Sheave Blocks, of which the ,following is a specification.

My invention is an improvement in sheave blocks, and has for its object to provide a block of the character specified, having a new and improved mounting for the wheel arranged to wear uniformly', y

A further object is to provide interchangeable wear plates,.which may be detached when worn and replaced by new plates, arranged at the lpoints engaged by the cable when the block is in use.

ln the drawings:

Figure l is a sidel view of the improved sheave block,

Figure 2 is an ed ge view,

Figures 3 and 4 are sections on thelines of Figure 2 and of Figure 1,'re spectively.

ln the present embodiment of the invention the pulley frame is composed of similar' side or housing plates l, which have vcooperating vertically arranged bearing sections 2 at their upper ends, for engaging the headed pin 3 of the supporting eye 4 for the block, and the sections are secured together at the pin by means of bolts and nuts 5 which. pass through flange lugs 6 on the sections. Each section l has an inwardly extending hollow axle or shaft portion 7, the said portions being in alinement and each having a transverse web 8 at its inner end, and these webs are connected bya bolt and nut 9, the head of the bolt and the nut being within the hollow shaft portions as shown,

The wheel l() is journaled on the shaft portions, a bushing 'il of bronze or the like being arranged between the wheel and the aille or supporting member constituted by the hollow axle or shaft portions T. This bushing is held from angular movement by means Aof dowel pins l2 whichengage registering openings in the sections l 'and in the bushing. y

It will be obvious that when this bushing becomes worn, it may be easily removed by detaching the framesections, and may be replaced by a new bushing. At the points where the cable indicated at 13 engages ythe frame sections., said sections become quickly worn and when worn, they must be cast away. That the entire housing must be discarded.

ln order to cure weer plat-es his t diffe-nity', l provide *which are secured to the het iv sections, at thepoints where the cable r3 engages saidk sections. Each of thesewearplates as shown', is held in a recess or depression i5 on the inner face of the housing section by any' suitable means as for instance,"by pins ony 'the plates which wid ontw dljf s through openings 1n the s n's and i. :e headed, as shown,

lilhen 'the wear plates become worn, the heads of the pins'may be cut off andthe wear. plates replaced by new ones. Thus the life of the housing or frameis indefinite, the only particular wear, being at the wear plates, and on the bushing both elements of which are removable.

l. A. sheave block, comprising in combination with the housing sections and the pulley, each housing section having a hollow shaft section, said shaft sections abutting at their inner ends and having transverse webs fitting one against .the other, a bolt traversing the webs for securing them together, the wheel being journaled on the shaft sections, and a bushing arranged be-v tween the wheel and the shaft sections, means in connection with the bushing and the housing sections for preventing movement of the bushing with the wheel, said means comprising dowel pins between the bushing and. the housing sections.

2. A sheave block comprising in comb-ination with the housing sections and the pulley, each housing section having a hol'- low shaft section, said shaft sections abutting at their inner ends, and having transverse webs fitting one against the other', a bolt traversing the webs for securing them together, the wheel being' journaled on the shaft sections, and a bus ring arranged between thev wheel and the shaft sections7 means in connection with the bushing` and the housing sections for preventing move ment of the bushing with the wheel.

A she-ave block comprising in combination with the housing sections and the pulley, each housing section having a hollow shaft section, said shaft sections abut- 

